US20100278606A1 - System and method of synchronized machining - Google Patents
System and method of synchronized machining Download PDFInfo
- Publication number
- US20100278606A1 US20100278606A1 US12/769,941 US76994110A US2010278606A1 US 20100278606 A1 US20100278606 A1 US 20100278606A1 US 76994110 A US76994110 A US 76994110A US 2010278606 A1 US2010278606 A1 US 2010278606A1
- Authority
- US
- United States
- Prior art keywords
- workpiece
- retainer
- tool
- axis
- cutting tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/16—Working surfaces curved in two directions
- B23C3/18—Working surfaces curved in two directions for shaping screw-propellers, turbine blades, or impellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
- B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
- B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
- B23Q39/025—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder
- B23Q39/026—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder simultaneous working of toolheads
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/414—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller
- G05B19/4142—Structure of the control system, e.g. common controller or multiprocessor systems, interface to servo, programmable interface controller characterised by the use of a microprocessor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/28—Finishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/60—Roughing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45044—Cutting
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50234—Synchronize two spindles, axis, electronic transmission, line shafting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
- Y10T29/49996—Successive distinct removal operations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5104—Type of machine
- Y10T29/5109—Lathe
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
- Y10T409/30112—Process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
- Y10T409/302968—Milling with regulation of operation by templet, card, or other replaceable information supply including means for operation without manual intervention
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/303752—Process
- Y10T409/303808—Process including infeeding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/306664—Milling including means to infeed rotary cutter toward work
- Y10T409/307784—Plural cutters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/10—Process of turning
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T82/00—Turning
- Y10T82/25—Lathe
- Y10T82/2502—Lathe with program control
Definitions
- This disclosure generally relates to computed numerically controlled machine tools and related methods.
- Computed Numerically Controlled (CNC) machine tools are generally known for forming metal and wooden parts. Such machine tools include lathes, milling machines, grinding machines, and other tool types. More recently, machining centers have been developed, which provide a single machine having multiple tool types and capable of performing multiple different machining processes. Machining centers may generally include one or more tool retainers, such as spindle retainers and turret retainers holding one or more tools, and a workpiece retainer, such as a pair of chucks. The workpiece holder may be stationary or move (in translation and/or rotation) while a tool is brought into contact with the workpiece, thereby to remove material from the workpiece.
- CNC Computed Numerically Controlled
- the machine tool may be required to perform a milling operation to execute certain tool paths through the workpiece.
- a milling tool is rotated at relatively high speed about a tool axis and is brought into contact with a stationary or relatively slow moving workpiece.
- material As material is removed from the workpiece, it may have reduced dynamic and/or static stiffness which may lead to excessive deflection or chatter of the workpiece, thereby diverting the milling tool from its intended path.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area, the workpiece retainer being supported for rotation about a C-axis.
- a first tool retainer may be positioned on a first side of the machining area, the first tool retainer being supported for movement along an X-axis and a Z-axis, and a first cutting tool may be disposed in the first tool retainer.
- a second tool retainer may be positioned on a second side of the machining area substantially opposite the first side of the machining area, the second tool retainer being supported for movement along an XA-axis substantially parallel to the X-axis and a ZA-axis substantially parallel to the Z-axis, and a second cutting tool disposed in the second tool retainer.
- a computer control system may include a computer readable medium having computer executable code disposed thereon and be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer.
- the code may include a single command line for simultaneously controlling movement of the workpiece retainer relative to the C-axis, movement of the first tool retainer relative to the X-axis and the Z-axis, and movement of the second tool retainer relative to the XA-axis and the ZA-axis.
- Operation of the workpiece retainer, the first tool retainer, and the second tool retainer may be simultaneously controlled with a controller including a single command line for controlling movement of the workpiece retainer relative to the C-axis, movement of the first tool retainer relative to the X-axis, the Y-axis, the Z-axis, and the B-axis, and movement of the second tool retainer relative to the XA-axis and the ZA-axis.
- Apparatus for machining a workpiece may include a workpiece retainer supported for rotation and configured to support the workpiece in a machining area, a first tool retainer positioned on a first side of the machining area and movable relative to the workpiece retainer, and a first cutting tool rotatably disposed in the first tool retainer.
- a second tool retainer may be positioned on a second side of the machining area substantially opposite the first side of the machining area and movable relative to the workpiece retainer, and a second cutting tool may be rotatably disposed in the second tool retainer.
- a computer control system may include a computer readable medium having computer executable code disposed thereon and be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer.
- the code may include code for simultaneously controlling rotation of the workpiece retainer, controlling movement of the first tool retainer relative to the machining area to selectively engage the first cutting tool with the workpiece along a first path, and controlling movement of the second tool retainer relative to the machining area to selectively engage the second cutting tool with the workpiece along a second path, wherein the first and second paths are part of a common surface to be formed on the workpiece.
- a method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area, securing a first cutting tool in a first tool retainer disposed on a first side of the machining area, and securing a second cutting tool in a second tool retainer disposed on a second side of the machining area substantially opposite the first side of the machining area.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area, a first tool retainer positioned on a first side of the machining area and movable relative to the workpiece retainer, a first cutting tool rotatably disposed in the first tool retainer, a second tool retainer positioned on a second side of the machining area substantially opposite the first side of the machining area, the second tool retainer being movable relative to the workpiece retainer, and a second cutting tool rotatably disposed in the second tool retainer.
- the apparatus may further include a computer control system including a computer readable medium having computer executable code disposed thereon and being operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer, the code including code for: causing the first tool retainer to move relative to the workpiece retainer to selectively engage the first cutting tool with a first point on the workpiece, engagement of the first cutting tool with the first point on the workpiece generating a first resulting force in the workpiece; and simultaneously causing the second tool retainer to move relative to the workpiece retainer to selectively engage the second cutting tool with a second point on the workpiece, engagement of the second cutting tool with the second point on the workpiece generating a second resulting force in the workpiece, wherein the second point on the workpiece is selected relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force.
- a computer control system including a computer readable medium having computer executable code disposed thereon and being operatively coupled to the workpiece retainer,
- a method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area, moving a first cutting tool disposed on a first side of the machining area to a first position in which the first cutting tool engages a first point on the workpiece, engagement of the first cutting tool with the first point generating a first resulting force in the workpiece, and simultaneously moving a second cutting tool disposed on a second, substantially opposite side of the machining area to a second position, in which the second cutting tool engages a second point on the workpiece, engagement of the second cutting tool with the second point on the workpiece generating a second resulting force in the workpiece, wherein the second point on the workpiece is selected relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area that includes a primary support configured to engage a first axial end of the workpiece and a secondary support configured to engage a second, opposite axial end of the workpiece, the primary and secondary supports being supported for rotation about a C-axis.
- a first tool retainer may be positioned on a first side of the machining area and movable relative to the workpiece retainer, and a first cutting tool may be rotatably disposed in the first tool retainer.
- a computer control system may include a computer readable medium having computer executable code disposed thereon that is operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer. The code may include code for moving the secondary support relative to the primary support to generate a pre-load force in the workpiece, and moving the first tool retainer to a first position in which the first cutting tool engages a first point on the workpiece.
- a method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area and including a primary support configured to engage a first axial end of the workpiece and a secondary support configured to engage a second, opposite axial end of the workpiece, moving the secondary support relative to the primary support to generate a pre-load force in the workpiece, and moving a first cutting tool disposed on a first side of the machining area to a first position in which the first cutting tool engages a first point on the workpiece.
- FIG. 1 is a front elevation of a computer numerically controlled machine in accordance with one embodiment of the present invention, shown with safety doors closed;
- FIG. 2 is a front elevation of a computer numerically controlled machine illustrated in FIG. 1 , shown with the safety doors open;
- FIG. 3 is a perspective view of certain interior components of the computer numerically controlled machine illustrated in FIGS. 1 and 2 , depicting a machining spindle, a first chuck, a second chuck, and a turret;
- FIG. 4 a perspective view, enlarged with respect to FIG. 3 illustrating the machining spindle and the horizontally and vertically disposed rails via which the spindle may be translated;
- FIG. 5 is a side view of the first chuck, machining spindle, and turret of the machining center illustrated in FIG. 1 ;
- FIG. 6 is a view similar to FIG. 5 but in which a machining spindle has been translated in the Y-axis;
- FIG. 7 is a front view of the spindle, first chuck, and second chuck of the computer numerically controlled machine illustrated in FIG. 1 , including a line depicting the permitted path of rotational movement of this spindle;
- FIG. 8 is a perspective view of the second chuck illustrated in FIG. 3 , enlarged with respect to FIG. 3 ;
- FIG. 9 is a perspective view of the first chuck and turret illustrated in FIG. 2 , depicting movement of the turret and turret stock in the Z-axis relative to the position of the turret in FIG. 2 ;
- FIG. 10 is a side elevation view of a portion of the computer numerically controlled machine performing a synchronized machining operation.
- FIG. 11 is an enlarged plan view of a portion of a workpiece showing points along a tool path.
- any suitable apparatus may be employed in conjunction with the methods disclosed herein.
- the methods are performed using a computer numerically controlled machine, illustrated generally in FIGS. 1-9 .
- a computer numerically controlled machine is itself provided in other embodiments.
- the machine 100 illustrated in FIGS. 1-9 is an NT-series machine, versions of which are available from DMG/Mori Seiki USA, the assignee of the present application. Other machines may be used in conjunction with the invention.
- one suitable computer numerically controlled machine 100 has at least a first retainer and a second retainer, each of which may be a tool retainer (such as a spindle retainer associated with spindle 144 or a turret retainer associated with a turret 108 ) or a workpiece retainer (such as chucks 110 , 112 ).
- the computer numerically controlled machine 100 is provided with a spindle 144 , a turret 108 , a first chuck 110 , and a second chuck 112 .
- the computer numerically controlled machine 100 also has a computer control system operatively coupled to the first retainer and to the second retainer for controlling the retainers, as described in more detail below. It is understood that in some embodiments, the computer numerically controlled machine 100 may not contain all of the above components, and in other embodiments, the computer numerically controlled machine 100 may contain additional components beyond those designated herein.
- the computer numerically controlled machine 100 has a machine chamber 116 in which various operations generally take place upon a workpiece (not shown).
- Each of the spindle 144 , the turret 108 , the first chuck 110 , and the second chuck 112 may be completely or partially located within the machine chamber 116 .
- two moveable safety doors 118 separate the user from the chamber 116 to prevent injury to the user or interference in the operation of the computer numerically controlled machine 100 .
- the safety doors 118 can be opened to permit access to the chamber 116 as illustrated in FIG. 2 .
- the computer numerically controlled machine 100 is described herein with respect to three orthogonally oriented linear axes (X, Y, and Z), depicted in FIG. 4 and described in greater detail below. Rotational axes about the X, Y and Z axes are connoted “A,” “B,” and “C” rotational axes respectively.
- the computer numerically controlled machine 100 is provided with a computer control system for controlling the various instrumentalities within the computer numerically controlled machine.
- the machine is provided with two interlinked computer systems, a first computer system comprising a user interface system (shown generally at 114 in FIG. 1 ) and a second computer system (not illustrated) operatively connected to the first computer system.
- the second computer system directly controls the operations of the spindle, the turret, and the other instrumentalities of the machine, while the user interface system 114 allows an operator to control the second computer system.
- the machine control system and the user interface system, together with the various mechanisms for control of operations in the machine may be considered a single computer control system.
- the user operates the user interface system to impart programming to the machine; in other embodiments, programs can be loaded or transferred into the machine via external sources. It is contemplated, for instance, that programs may be loaded via a PCMCIA interface, an RS-232 interface, a universal serial bus interface (USB), or a network interface, in particular a TCP/IP network interface.
- programs may be loaded via a PCMCIA interface, an RS-232 interface, a universal serial bus interface (USB), or a network interface, in particular a TCP/IP network interface.
- a machine may be controlled via conventional PLC (programmable logic controller) mechanisms (not illustrated).
- the computer numerically controlled machine 100 may have a tool magazine 142 and a tool changing device 143 . These cooperate with the spindle 144 to permit the spindle to operate with plural cutting tools (shown in FIG. 2 as tools 102 ′). Generally, a variety of cutting tools may be provided; in some embodiments, multiple tools of the same type may be provided.
- the spindle 144 is mounted on a carriage assembly 120 that allows for translational movement along the X- and Z-axis, and on a ram 132 that allows the spindle 144 to be moved in the Y-axis.
- the ram 132 is equipped with a motor to allow rotation of the spindle in the B-axis, as set forth in more detail hereinbelow.
- the carriage assembly has a first carriage 124 that rides along two threaded vertical rails (one rail shown at 126 ) to cause the first carriage 124 and spindle 144 to translate in the X-axis.
- the carriage assembly also includes a second carriage 128 that rides along two horizontally disposed threaded rails (one shown in FIG.
- Each carriage 124 , 128 engages the rails via plural ball screw devices whereby rotation of the rails 126 , 130 causes translation of the carriage in the X- or Z-direction respectively.
- the rails are equipped with motors 170 and 172 for the horizontally disposed and vertically disposed rails respectively.
- the spindle 144 holds the cutting tool 102 by way of a spindle connection and a tool holder 106 .
- the spindle connection 145 (shown in FIG. 2 ) is connected to the spindle 144 and is contained within the spindle 144 .
- the tool holder 106 is connected to the spindle connection and holds the cutting tool 102 .
- Various types of spindle connections are known in the art and can be used with the computer numerically controlled machine 100 .
- the spindle connection is contained within the spindle 144 for the life of the spindle.
- An access plate 122 for the spindle 144 is shown in FIGS. 5 and 6 .
- the first chuck 110 is provided with jaws 136 and is disposed in a stock 150 that is stationary with respect to the base 111 of the computer numerically controlled machine 100 .
- the second chuck 112 is also provided with jaws 137 , but the second chuck 112 is movable with respect to the base 111 of the computer numerically controlled machine 100 .
- the machine 100 is provided with threaded rails 138 and motors 139 for causing translation in the Z-direction of the second stock 152 via a ball screw mechanism as heretofore described.
- the stock 152 is provided with a sloped distal surface 174 and a side frame 176 with Z-sloped surfaces 177 , 178 .
- Hydraulic controls and associated indicators for the chucks 110 , 112 may be provided, such as the pressure gauges 182 and control knobs 184 shown in FIGS. 1 and 2 .
- Each stock is provided with a motor ( 161 , 162 respectively) for causing rotation of the chuck.
- the turret 108 which is best depicted in FIGS. 5 , 6 and 9 , is mounted in a turret stock 146 ( FIG. 5 ) that also engages rails 138 and that may be translated in a Z-direction, again via ball-screw devices.
- the turret 108 is provided with various turret connectors 134 , as illustrated in FIG. 9 .
- Each turret connector 134 can be connected to a tool holder 135 or other connection for connecting to a cutting tool. Since the turret 108 can have a variety of turret connectors 134 and tool holders 135 , a variety of different cutting tools can be held and operated by the turret 108 .
- the turret 108 may be rotated in a C′ axis to present different ones of the tool holders (and hence, in many embodiments, different tools) to a workpiece.
- the machine is provided with a plurality of vertically disposed leaves 180 and horizontal disposed leaves 181 to define a wall of the chamber 116 and to prevent swarf from exiting this chamber.
- the components of the machine 100 are not limited to the heretofore described components. For instance, in some instances an additional turret may be provided. In other instances, additional chucks and/or spindles may be provided. Generally, the machine is provided with one or more mechanisms for introducing a cooling liquid into the chamber 116 .
- the computer numerically controlled machine 100 is provided with numerous retainers.
- Chuck 110 in combination with jaws 136 forms a retainer, as does chuck 112 in combination with jaws 137 .
- these retainers will also be used to hold a workpiece.
- the chucks and associated stocks will function in a lathe-like manner as the headstock and optional tailstock for a rotating workpiece.
- Spindle 144 and spindle connection 145 form another retainer.
- the turret 108 when equipped with plural turret connectors 134 , provides a plurality of retainers (shown in FIG. 9 ).
- the computer numerically controlled machine 100 may use any of a number of different types of cutting tools known in the art or otherwise found to be suitable.
- the cutting tool 102 may be a milling tool, a drilling tool, a grinding tool, a blade tool, a broaching tool, a turning tool, or any other type of cutting tool deemed appropriate in connection with a computer numerically controlled machine 100 .
- the computer numerically controlled machine 100 may be provided with more than one type of cutting tool, and via the mechanisms of the tool changing device 143 and magazine 142 , the spindle 144 may be caused to exchange one tool for another.
- the turret 108 may be provided with one or more cutting tools 102 , and the operator may switch between cutting tools 102 by causing rotation of the turret 108 to bring a new turret connector 134 into the appropriate position.
- FIGS. 1-9 Other features of a computer numerically controlled machine include, for instance, an air blower for clearance and removal of chips, various cameras, tool calibrating devices, probes, probe receivers, and lighting features.
- the computer numerically controlled machine illustrated in FIGS. 1-9 is not the only machine of the invention, but to the contrary, other embodiments are envisioned.
- the computer numerically controlled machine 100 may be configured and controlled to execute machining operations more quickly and efficiently than previously known machines.
- the machine 100 may include code for simultaneously controlling a workpiece holder, a first tool retainer, and a second tool retainer in a synchronized manner.
- opposite ends of a workpiece 200 may be supported by a workpiece retainer in the form of the chucks 110 , 112 , which define a machining area 202 .
- the chucks 110 , 112 may be rotatable about a C-axis.
- the spindle 144 may provide a first tool retainer carrying a first cutting tool 204 .
- the spindle 144 may be movable along an X-axis, a Y-axis, and a Z-axis, and may further be rotated about a B-axis.
- the turret 108 may provide a second tool retainer carrying a second cutting tool 206 .
- the turret 108 may be movable along an XA-axis substantially parallel to the X-axis and a ZA-axis substantially parallel to the Z axis.
- the axes of movement noted above for the spindle 144 and turret 108 are merely exemplary, as they may be movable with respect to fewer or more than the axes identified above.
- Exemplary X, Y, Z, A, B, and C axes are shown in FIG. 4 .
- the X, Y, and Z axes are orthogonal, while the A, B, and C axes define rotation about the X, Y, and Z axes, respectively.
- These axes are provided to help describe movement in a three-dimensional space, and therefore other coordinate schemes may be used without departing from the scope of the appended claims. Additionally, use of these axes to describe movement is intended to encompass actual, physical axes that are perpendicular to one another, as well as virtual axes that may not be physically perpendicular but in which the tool path is manipulated by a controller to behave as if they were physically perpendicular.
- the computer control system of the machine 100 is operatively coupled to the chucks 110 , 112 , the spindle 144 , and the turret 108 , and may include a computer readable medium having computer executable code disposed thereon.
- the code may include a single command line for simultaneously controlling movement of the chucks 110 , 112 relative to the C-axis, movement of the spindle 144 relative to the X-axis, the Y-axis, the Z-axis, and the B-axis, and movement of the turret 108 relative to the XA-axis and the ZA-axis.
- the single command line may be structured as follows:
- variables #500-506 allow axis offset control in addition to CAM output.
- the XA and ZA axes are interpolated.
- the exemplary command line provided above simultaneously controls seven axes, it will be appreciated that it may alternatively be structured to control less fewer or additional axes.
- the second tool retainer i.e., the turret 108
- the single command line may accordingly be structured to further control movement of the second tool retainer relative to the YA-axis and BA-axis.
- the computer control system for the CNC machine 100 may be configured and controlled to operate two cutting tools to more quickly execute a single machining step or to simultaneously perform two separate machining steps.
- the computer control system may include a computer readable medium having computer executable code disposed thereon.
- the computer control system may be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer.
- the code may include code for simultaneously controlling rotation of the workpiece retainer; controlling movement of the first tool retainer relative to the machining area to selectively engage the first milling tool with the workpiece along a first path; and controlling movement of the second tool retainer relative to the machining area to selectively engage the second milling tool with the workpiece along a second path.
- the first and second paths may form parts of a common surface to be formed on the workpiece, and therefore the milling operation may be completed more quickly than with previously known machine centers. Such operation may be particularly advantageous when machining asymmetrical parts, such as the turbine blade illustrated in FIG. 10 .
- a “common surface” of a workpiece is a contiguous surface to be formed in the workpiece.
- the first and second milling tools may be contacting the workpiece at separate, spaced areas of the workpiece.
- the surface formed by the tools will be contiguous.
- the CNC machine 100 may be operated to perform a balanced or pinch milling operation to form parts having reduced static or dynamic stiffness. Previous machine centers operated in a conventional manner may induce deflection and chatter in the workpiece, thereby decreasing precision of the machining operation.
- the CNC machine 100 described herein, however, may be controlled in a manner that reduces deflection and chatter in the workpiece.
- the intended final configuration of the workpiece 200 is a propeller blade that is relatively long along the Z-axis and has a relatively thin cross-section. Such a final configuration may be susceptible to vibration and chatter during machining.
- the spindle connection 145 carries a first tool 204 , which may be a first milling tool.
- the first tool 204 is positioned on a first side of the machining area 202 , shown in FIG. 10 as being located above the workpiece 200 .
- the spindle 144 is movable relative to the chucks 110 , 112 , as noted above, and may rotate the first tool 204 when it is provided as a milling tool.
- material is removed from the workpiece.
- the first cutting tool 204 contacts a first point 208 on the workpiece. Engagement of the first cutting tool 204 with the workpiece 200 generates a first resulting force (such as a bending force, a torsion force, a tension force, a compression force, or combinations thereof) in the workpiece 200 .
- a first resulting force such as a bending force, a torsion force, a tension force, a compression force, or combinations thereof
- the turret connector 134 carries a second tool 206 , which may be a second milling tool.
- the second tool 206 is positioned on a second, opposite side of the machining area 202 , shown in FIG. 10 as being located below the workpiece 200 .
- the turret 108 is movable relative to the chucks 110 , 112 , as noted above, and may rotate the second tool 206 when it is provided as a milling tool.
- material is removed from the workpiece.
- the second tool 206 contacts a second point 210 on the workpiece 200 .
- Engagement of the second tool 206 with the workpiece 200 also generates a second resulting force (such as a bending force, a torsion force, a tension force, a compression force, or combinations thereof) in the workpiece 200 .
- the computer numerically controlled machine 100 may be controlled to select the second point 210 relative to the first point 208 to minimize chatter or other deflection in the workpiece 200 , thereby to improve accuracy and precision of the machine 100 .
- the second point 210 may be selected so that it is on an opposite face of the workpiece 200 and closely aligned with the first point 208 along a vertical or X-axis.
- the second resulting force in the workpiece 200 generated by the second cutting tool 206 will substantially counteract and balance the first resulting force in the workpiece generated by the first cutting tool 204 , thereby reducing deflection of the workpiece 200 during machining
- the computer control system of the CNC machine 100 may include a computer readable medium having computer executable code disposed thereon.
- the computer control system may be operatively coupled to the chucks 110 , 112 , the first tool 204 and the second tool 206 and include code for causing the first tool retainer to move relative to the workpiece retainer to selectively engage the first milling tool with a first point on the workpiece, wherein engagement of the first tool with the first point on the workpiece generates a first resulting force in the workpiece.
- the code may further include code for simultaneously causing the second tool retainer to move relative to the workpiece retainer to selectively engage the second milling tool with a second point on the workpiece, wherein engagement of the second tool with the second point on the workpiece generating a second resulting force in the workpiece.
- the code may select the second point on the workpiece relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force
- the milling tools may be precisely aligned or merely closely aligned with a predetermined offset.
- both milling tools are of the same type, such as rough milling tools, they may be precisely aligned to minimize the amount of deflection in the workpiece.
- the use of two tools of the same type may reduce the amount of time needed to perform the machining operation, such as a rough milling step.
- the tools may be deliberately offset to permit different types of tools to simultaneously operate. As shown in FIG. 10 , the second point 210 is offset from the first point 208 by a distance “D” along the Z-axis.
- the second cutting tool 206 may be a rough milling tool while the first cutting tool 204 is a finish milling tool.
- the first and second cutting tools 204 , 206 begin machining at the left axial end of the workpiece 200 and move to the right (as shown in FIG. 10 ) as they traverse the workpiece 200 .
- the resulting forces are substantially balanced, thereby reducing deflection of the workpiece 200 .
- Each cutting tool 204 , 206 may be operated to traverse a path along the workpiece 200 including multiple points of contact.
- a path 220 extending along one face of the workpiece 200 may include a set of points 222 , as illustrated in FIG. 11 .
- An opposite face of the workpiece 200 may include a second path including a second set of points (not shown).
- the first and second sets of points may include, respectively, the first and second point 208 , 210 noted above.
- Each point in the second set of points may be selected relative to an associated point in the first set of points so that the first and second resulting forces generated at each corresponding pair of points are substantially balanced as the first and second cutting tools 204 , 206 traverse the first and second paths.
- the chucks 110 , 112 may be simultaneously rotated about the C-axis at substantially the same velocity to facilitate quick and efficient positioning of the cutting tool 204 , 206 along the paths.
- the chucks 110 , 112 may be operated to increase rigidity of the workpiece 200 as it is machined.
- the chuck 110 may be a primary support for the workpiece 200 while the chuck 112 is a secondary support for the workpiece 200 .
- the chucks 110 , 112 are aligned along the Z-axis and spaced apart from one another.
- the chuck 112 may be axially movable along the Z-axis relative to the chuck 110 .
- the chuck 112 may be moved toward the chuck 110 to create a compression pre-load.
- the chuck 112 may be moved away from the chuck 110 to create a tension pre-load. Still further, the chuck 112 may be rotatable about a C-axis relative to the chuck 110 to create a torsion pre-load in the workpiece 200 .
- the apparatus may or may not be provided with a tool or workpiece.
- An apparatus that is configured to receive a tool and workpiece is deemed to fall within the purview of the claims recited herein. Additionally, an apparatus that has been provided with both a tool and workpiece is deemed to fall within the purview of the appended claims. Except as may be otherwise claimed, the claims are not deemed to be limited to any tool depicted herein.
Abstract
Description
- This application claims the benefit of U.S. Provisional Application Ser. No. 61/215,203, filed on Apr. 29, 2009, which is incorporated herein by reference.
- 1. Technical Field
- This disclosure generally relates to computed numerically controlled machine tools and related methods.
- 2. Description of the Related Art
- Computed Numerically Controlled (CNC) machine tools are generally known for forming metal and wooden parts. Such machine tools include lathes, milling machines, grinding machines, and other tool types. More recently, machining centers have been developed, which provide a single machine having multiple tool types and capable of performing multiple different machining processes. Machining centers may generally include one or more tool retainers, such as spindle retainers and turret retainers holding one or more tools, and a workpiece retainer, such as a pair of chucks. The workpiece holder may be stationary or move (in translation and/or rotation) while a tool is brought into contact with the workpiece, thereby to remove material from the workpiece.
- The machine tool may be required to perform a milling operation to execute certain tool paths through the workpiece. During the milling operation, a milling tool is rotated at relatively high speed about a tool axis and is brought into contact with a stationary or relatively slow moving workpiece. As material is removed from the workpiece, it may have reduced dynamic and/or static stiffness which may lead to excessive deflection or chatter of the workpiece, thereby diverting the milling tool from its intended path.
- Additionally, even though conventional machine centers may be capable of using two tools at the same time, they are typically controlled in a manner that is inefficient and overly time consuming. Still further, certain milling operations may require multiple steps, such as an initial step with a first milling tool to perform rough milling, and a second step with a second milling tool to perform finish milling. Current machining center systems and methods may perform these steps sequentially, thereby wasting additional time.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area, the workpiece retainer being supported for rotation about a C-axis. A first tool retainer may be positioned on a first side of the machining area, the first tool retainer being supported for movement along an X-axis and a Z-axis, and a first cutting tool may be disposed in the first tool retainer. A second tool retainer may be positioned on a second side of the machining area substantially opposite the first side of the machining area, the second tool retainer being supported for movement along an XA-axis substantially parallel to the X-axis and a ZA-axis substantially parallel to the Z-axis, and a second cutting tool disposed in the second tool retainer. A computer control system may include a computer readable medium having computer executable code disposed thereon and be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer. The code may include a single command line for simultaneously controlling movement of the workpiece retainer relative to the C-axis, movement of the first tool retainer relative to the X-axis and the Z-axis, and movement of the second tool retainer relative to the XA-axis and the ZA-axis.
- A method of machining a workpiece may include securing a workpiece in a workpiece retainer, the workpiece retainer defining a machining area and being supported for rotation about a C-axis. A first cutting tool may be secured in a first tool retainer disposed on a first side of the machining area, the first tool retainer being supported for movement along an X-axis and a Z-axis, and a second cutting tool may be secured in a second tool retainer disposed on a second side of the machining area substantially opposite the first side of the machining area, the second tool retainer being supported for movement along an XA-axis substantially parallel to the X-axis and a ZA-axis substantially parallel to the Z-axis. Operation of the workpiece retainer, the first tool retainer, and the second tool retainer may be simultaneously controlled with a controller including a single command line for controlling movement of the workpiece retainer relative to the C-axis, movement of the first tool retainer relative to the X-axis, the Y-axis, the Z-axis, and the B-axis, and movement of the second tool retainer relative to the XA-axis and the ZA-axis.
- Apparatus for machining a workpiece may include a workpiece retainer supported for rotation and configured to support the workpiece in a machining area, a first tool retainer positioned on a first side of the machining area and movable relative to the workpiece retainer, and a first cutting tool rotatably disposed in the first tool retainer. A second tool retainer may be positioned on a second side of the machining area substantially opposite the first side of the machining area and movable relative to the workpiece retainer, and a second cutting tool may be rotatably disposed in the second tool retainer. A computer control system may include a computer readable medium having computer executable code disposed thereon and be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer. The code may include code for simultaneously controlling rotation of the workpiece retainer, controlling movement of the first tool retainer relative to the machining area to selectively engage the first cutting tool with the workpiece along a first path, and controlling movement of the second tool retainer relative to the machining area to selectively engage the second cutting tool with the workpiece along a second path, wherein the first and second paths are part of a common surface to be formed on the workpiece.
- A method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area, securing a first cutting tool in a first tool retainer disposed on a first side of the machining area, and securing a second cutting tool in a second tool retainer disposed on a second side of the machining area substantially opposite the first side of the machining area. Operation of the workpiece retainer, the first tool retainer, and the second tool retainer may be controlled with a controller programmed to simultaneously control rotation of the workpiece retainer, control movement of the first tool retainer relative to the machining area to selectively engage the first cutting tool with the workpiece along a first path, and control movement of the second tool retainer relative to the machining area to selectively engage the second cutting tool with the workpiece along a second path, wherein the first and second paths are part of a common surface to be formed on the workpiece.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area, a first tool retainer positioned on a first side of the machining area and movable relative to the workpiece retainer, a first cutting tool rotatably disposed in the first tool retainer, a second tool retainer positioned on a second side of the machining area substantially opposite the first side of the machining area, the second tool retainer being movable relative to the workpiece retainer, and a second cutting tool rotatably disposed in the second tool retainer. The apparatus may further include a computer control system including a computer readable medium having computer executable code disposed thereon and being operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer, the code including code for: causing the first tool retainer to move relative to the workpiece retainer to selectively engage the first cutting tool with a first point on the workpiece, engagement of the first cutting tool with the first point on the workpiece generating a first resulting force in the workpiece; and simultaneously causing the second tool retainer to move relative to the workpiece retainer to selectively engage the second cutting tool with a second point on the workpiece, engagement of the second cutting tool with the second point on the workpiece generating a second resulting force in the workpiece, wherein the second point on the workpiece is selected relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force.
- A method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area, moving a first cutting tool disposed on a first side of the machining area to a first position in which the first cutting tool engages a first point on the workpiece, engagement of the first cutting tool with the first point generating a first resulting force in the workpiece, and simultaneously moving a second cutting tool disposed on a second, substantially opposite side of the machining area to a second position, in which the second cutting tool engages a second point on the workpiece, engagement of the second cutting tool with the second point on the workpiece generating a second resulting force in the workpiece, wherein the second point on the workpiece is selected relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force.
- An apparatus for machining a workpiece may include a workpiece retainer configured to support the workpiece in a machining area that includes a primary support configured to engage a first axial end of the workpiece and a secondary support configured to engage a second, opposite axial end of the workpiece, the primary and secondary supports being supported for rotation about a C-axis. A first tool retainer may be positioned on a first side of the machining area and movable relative to the workpiece retainer, and a first cutting tool may be rotatably disposed in the first tool retainer. A computer control system may include a computer readable medium having computer executable code disposed thereon that is operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer. The code may include code for moving the secondary support relative to the primary support to generate a pre-load force in the workpiece, and moving the first tool retainer to a first position in which the first cutting tool engages a first point on the workpiece.
- A method of machining a workpiece may include securing the workpiece in a workpiece retainer, the workpiece retainer defining a machining area and including a primary support configured to engage a first axial end of the workpiece and a secondary support configured to engage a second, opposite axial end of the workpiece, moving the secondary support relative to the primary support to generate a pre-load force in the workpiece, and moving a first cutting tool disposed on a first side of the machining area to a first position in which the first cutting tool engages a first point on the workpiece.
- For a more complete understanding of the disclosed methods and apparatuses, reference should be made to the embodiment illustrated in greater detail on the accompanying drawings, wherein:
-
FIG. 1 is a front elevation of a computer numerically controlled machine in accordance with one embodiment of the present invention, shown with safety doors closed; -
FIG. 2 is a front elevation of a computer numerically controlled machine illustrated inFIG. 1 , shown with the safety doors open; -
FIG. 3 is a perspective view of certain interior components of the computer numerically controlled machine illustrated inFIGS. 1 and 2 , depicting a machining spindle, a first chuck, a second chuck, and a turret; -
FIG. 4 a perspective view, enlarged with respect toFIG. 3 illustrating the machining spindle and the horizontally and vertically disposed rails via which the spindle may be translated; -
FIG. 5 is a side view of the first chuck, machining spindle, and turret of the machining center illustrated inFIG. 1 ; -
FIG. 6 is a view similar toFIG. 5 but in which a machining spindle has been translated in the Y-axis; -
FIG. 7 is a front view of the spindle, first chuck, and second chuck of the computer numerically controlled machine illustrated inFIG. 1 , including a line depicting the permitted path of rotational movement of this spindle; -
FIG. 8 is a perspective view of the second chuck illustrated inFIG. 3 , enlarged with respect toFIG. 3 ; -
FIG. 9 is a perspective view of the first chuck and turret illustrated inFIG. 2 , depicting movement of the turret and turret stock in the Z-axis relative to the position of the turret inFIG. 2 ; -
FIG. 10 is a side elevation view of a portion of the computer numerically controlled machine performing a synchronized machining operation; and -
FIG. 11 is an enlarged plan view of a portion of a workpiece showing points along a tool path. - It should be understood that the drawings are not necessarily to scale and that the disclosed embodiments are sometimes illustrated diagrammatically and in partial views. In certain instances, details which are not necessary for an understanding of the disclosed methods and apparatuses or which render other details difficult to perceive may have been omitted. It should be understood, of course, that this disclosure is not limited to the particular embodiments illustrated herein.
- Any suitable apparatus may be employed in conjunction with the methods disclosed herein. In some embodiments, the methods are performed using a computer numerically controlled machine, illustrated generally in
FIGS. 1-9 . A computer numerically controlled machine is itself provided in other embodiments. Themachine 100 illustrated inFIGS. 1-9 is an NT-series machine, versions of which are available from DMG/Mori Seiki USA, the assignee of the present application. Other machines may be used in conjunction with the invention. - In general, with reference to the NT-series machine illustrated in
FIGS. 1-3 , one suitable computer numerically controlledmachine 100 has at least a first retainer and a second retainer, each of which may be a tool retainer (such as a spindle retainer associated withspindle 144 or a turret retainer associated with a turret 108) or a workpiece retainer (such aschucks 110, 112). In the embodiment illustrated in the Figures, the computer numerically controlledmachine 100 is provided with aspindle 144, aturret 108, afirst chuck 110, and asecond chuck 112. The computer numerically controlledmachine 100 also has a computer control system operatively coupled to the first retainer and to the second retainer for controlling the retainers, as described in more detail below. It is understood that in some embodiments, the computer numerically controlledmachine 100 may not contain all of the above components, and in other embodiments, the computer numerically controlledmachine 100 may contain additional components beyond those designated herein. - As shown in
FIGS. 1 and 2 , the computer numerically controlledmachine 100 has amachine chamber 116 in which various operations generally take place upon a workpiece (not shown). Each of thespindle 144, theturret 108, thefirst chuck 110, and thesecond chuck 112 may be completely or partially located within themachine chamber 116. In the embodiment shown, twomoveable safety doors 118 separate the user from thechamber 116 to prevent injury to the user or interference in the operation of the computer numerically controlledmachine 100. Thesafety doors 118 can be opened to permit access to thechamber 116 as illustrated inFIG. 2 . The computer numerically controlledmachine 100 is described herein with respect to three orthogonally oriented linear axes (X, Y, and Z), depicted in FIG. 4 and described in greater detail below. Rotational axes about the X, Y and Z axes are connoted “A,” “B,” and “C” rotational axes respectively. - The computer numerically controlled
machine 100 is provided with a computer control system for controlling the various instrumentalities within the computer numerically controlled machine. In the illustrated embodiment, the machine is provided with two interlinked computer systems, a first computer system comprising a user interface system (shown generally at 114 inFIG. 1 ) and a second computer system (not illustrated) operatively connected to the first computer system. The second computer system directly controls the operations of the spindle, the turret, and the other instrumentalities of the machine, while theuser interface system 114 allows an operator to control the second computer system. Collectively, the machine control system and the user interface system, together with the various mechanisms for control of operations in the machine, may be considered a single computer control system. In some embodiments, the user operates the user interface system to impart programming to the machine; in other embodiments, programs can be loaded or transferred into the machine via external sources. It is contemplated, for instance, that programs may be loaded via a PCMCIA interface, an RS-232 interface, a universal serial bus interface (USB), or a network interface, in particular a TCP/IP network interface. In other embodiments, a machine may be controlled via conventional PLC (programmable logic controller) mechanisms (not illustrated). - As further illustrated in
FIGS. 1 and 2 , the computer numerically controlledmachine 100 may have atool magazine 142 and atool changing device 143. These cooperate with thespindle 144 to permit the spindle to operate with plural cutting tools (shown inFIG. 2 astools 102′). Generally, a variety of cutting tools may be provided; in some embodiments, multiple tools of the same type may be provided. - The
spindle 144 is mounted on acarriage assembly 120 that allows for translational movement along the X- and Z-axis, and on aram 132 that allows thespindle 144 to be moved in the Y-axis. Theram 132 is equipped with a motor to allow rotation of the spindle in the B-axis, as set forth in more detail hereinbelow. As illustrated, the carriage assembly has afirst carriage 124 that rides along two threaded vertical rails (one rail shown at 126) to cause thefirst carriage 124 andspindle 144 to translate in the X-axis. The carriage assembly also includes asecond carriage 128 that rides along two horizontally disposed threaded rails (one shown inFIG. 3 at 130) to allow movement of thesecond carriage 128 andspindle 144 in the Z-axis. Eachcarriage rails motors - The
spindle 144 holds thecutting tool 102 by way of a spindle connection and atool holder 106. The spindle connection 145 (shown inFIG. 2 ) is connected to thespindle 144 and is contained within thespindle 144. Thetool holder 106 is connected to the spindle connection and holds thecutting tool 102. Various types of spindle connections are known in the art and can be used with the computer numerically controlledmachine 100. Typically, the spindle connection is contained within thespindle 144 for the life of the spindle. Anaccess plate 122 for thespindle 144 is shown inFIGS. 5 and 6 . - The
first chuck 110 is provided withjaws 136 and is disposed in astock 150 that is stationary with respect to thebase 111 of the computer numerically controlledmachine 100. Thesecond chuck 112 is also provided withjaws 137, but thesecond chuck 112 is movable with respect to thebase 111 of the computer numerically controlledmachine 100. More specifically, themachine 100 is provided with threadedrails 138 andmotors 139 for causing translation in the Z-direction of thesecond stock 152 via a ball screw mechanism as heretofore described. To assist in swarf removal, thestock 152 is provided with a slopeddistal surface 174 and aside frame 176 with Z-slopedsurfaces chucks control knobs 184 shown inFIGS. 1 and 2 . Each stock is provided with a motor (161, 162 respectively) for causing rotation of the chuck. - The
turret 108, which is best depicted inFIGS. 5 , 6 and 9, is mounted in a turret stock 146 (FIG. 5 ) that also engagesrails 138 and that may be translated in a Z-direction, again via ball-screw devices. Theturret 108 is provided withvarious turret connectors 134, as illustrated inFIG. 9 . Eachturret connector 134 can be connected to atool holder 135 or other connection for connecting to a cutting tool. Since theturret 108 can have a variety ofturret connectors 134 andtool holders 135, a variety of different cutting tools can be held and operated by theturret 108. Theturret 108 may be rotated in a C′ axis to present different ones of the tool holders (and hence, in many embodiments, different tools) to a workpiece. - It is thus seen that a wide range of versatile operations may be performed. With reference to
tool 102 held intool holder 106,such tool 102 may be brought to bear against a workpiece (not shown) held by one or both ofchucks tool 102, areplacement tool 102 may be retrieved from thetool magazine 142 by means of thetool changing device 143. With reference toFIGS. 4 and 5 , thespindle 144 may be translated in the X and Z directions (shown inFIG. 4 ) and Y direction (shown inFIGS. 5 and 6 ). Rotation in the B axis is depicted inFIG. 7 , the illustrated embodiment permitting rotation within a range of 120 degrees to either side of the vertical. Movement in the Y direction and rotation in the B axis are powered by motors (not shown) that are located behind thecarriage 124. - Generally, as seen in
FIGS. 2 and 7 , the machine is provided with a plurality of vertically disposed leaves 180 and horizontaldisposed leaves 181 to define a wall of thechamber 116 and to prevent swarf from exiting this chamber. - The components of the
machine 100 are not limited to the heretofore described components. For instance, in some instances an additional turret may be provided. In other instances, additional chucks and/or spindles may be provided. Generally, the machine is provided with one or more mechanisms for introducing a cooling liquid into thechamber 116. - In the illustrated embodiment, the computer numerically controlled
machine 100 is provided with numerous retainers.Chuck 110 in combination withjaws 136 forms a retainer, as does chuck 112 in combination withjaws 137. In many instances these retainers will also be used to hold a workpiece. For instance, the chucks and associated stocks will function in a lathe-like manner as the headstock and optional tailstock for a rotating workpiece.Spindle 144 andspindle connection 145 form another retainer. Similarly, theturret 108, when equipped withplural turret connectors 134, provides a plurality of retainers (shown inFIG. 9 ). - The computer numerically controlled
machine 100 may use any of a number of different types of cutting tools known in the art or otherwise found to be suitable. For instance, thecutting tool 102 may be a milling tool, a drilling tool, a grinding tool, a blade tool, a broaching tool, a turning tool, or any other type of cutting tool deemed appropriate in connection with a computer numerically controlledmachine 100. As discussed above, the computer numerically controlledmachine 100 may be provided with more than one type of cutting tool, and via the mechanisms of thetool changing device 143 andmagazine 142, thespindle 144 may be caused to exchange one tool for another. Similarly, theturret 108 may be provided with one ormore cutting tools 102, and the operator may switch betweencutting tools 102 by causing rotation of theturret 108 to bring anew turret connector 134 into the appropriate position. - Other features of a computer numerically controlled machine include, for instance, an air blower for clearance and removal of chips, various cameras, tool calibrating devices, probes, probe receivers, and lighting features. The computer numerically controlled machine illustrated in
FIGS. 1-9 is not the only machine of the invention, but to the contrary, other embodiments are envisioned. - The computer numerically controlled
machine 100 may be configured and controlled to execute machining operations more quickly and efficiently than previously known machines. In an exemplary embodiment, themachine 100 may include code for simultaneously controlling a workpiece holder, a first tool retainer, and a second tool retainer in a synchronized manner. As shown inFIG. 10 , opposite ends of aworkpiece 200 may be supported by a workpiece retainer in the form of thechucks machining area 202. Thechucks spindle 144 may provide a first tool retainer carrying afirst cutting tool 204. As noted above, thespindle 144 may be movable along an X-axis, a Y-axis, and a Z-axis, and may further be rotated about a B-axis. Theturret 108 may provide a second tool retainer carrying asecond cutting tool 206. Again, as described in greater detail above, theturret 108 may be movable along an XA-axis substantially parallel to the X-axis and a ZA-axis substantially parallel to the Z axis. The axes of movement noted above for thespindle 144 andturret 108 are merely exemplary, as they may be movable with respect to fewer or more than the axes identified above. - Exemplary X, Y, Z, A, B, and C axes are shown in
FIG. 4 . In the illustrated embodiment, the X, Y, and Z axes are orthogonal, while the A, B, and C axes define rotation about the X, Y, and Z axes, respectively. These axes are provided to help describe movement in a three-dimensional space, and therefore other coordinate schemes may be used without departing from the scope of the appended claims. Additionally, use of these axes to describe movement is intended to encompass actual, physical axes that are perpendicular to one another, as well as virtual axes that may not be physically perpendicular but in which the tool path is manipulated by a controller to behave as if they were physically perpendicular. - The computer control system of the
machine 100 is operatively coupled to thechucks spindle 144, and theturret 108, and may include a computer readable medium having computer executable code disposed thereon. The code may include a single command line for simultaneously controlling movement of thechucks spindle 144 relative to the X-axis, the Y-axis, the Z-axis, and the B-axis, and movement of theturret 108 relative to the XA-axis and the ZA-axis. For example, the single command line may be structured as follows: -
X[#500+[123.000]]Y[#502+[123.000]]Z[#501+[123.000]]B[#503+[123.000]]C[#504+[123.000]]XA[#505+[123.000]]ZA[#506+[123.000]] G01 - where variables #500-506 allow axis offset control in addition to CAM output. In this structure, the XA and ZA axes are interpolated.
- While the exemplary command line provided above simultaneously controls seven axes, it will be appreciated that it may alternatively be structured to control less fewer or additional axes. For example, the second tool retainer (i.e., the turret 108) may further be supported for movement along a YA-axis substantially parallel to the Y-axis and for rotation about a BA-axis substantially parallel to the B-axis. The single command line may accordingly be structured to further control movement of the second tool retainer relative to the YA-axis and BA-axis.
- In an additional exemplary embodiment, the computer control system for the
CNC machine 100 may be configured and controlled to operate two cutting tools to more quickly execute a single machining step or to simultaneously perform two separate machining steps. For example, the computer control system may include a computer readable medium having computer executable code disposed thereon. The computer control system may be operatively coupled to the workpiece retainer, the first tool retainer, and the second tool retainer. The code may include code for simultaneously controlling rotation of the workpiece retainer; controlling movement of the first tool retainer relative to the machining area to selectively engage the first milling tool with the workpiece along a first path; and controlling movement of the second tool retainer relative to the machining area to selectively engage the second milling tool with the workpiece along a second path. The first and second paths may form parts of a common surface to be formed on the workpiece, and therefore the milling operation may be completed more quickly than with previously known machine centers. Such operation may be particularly advantageous when machining asymmetrical parts, such as the turbine blade illustrated inFIG. 10 . - As used above, a “common surface” of a workpiece is a contiguous surface to be formed in the workpiece. At any given time during operation, the first and second milling tools may be contacting the workpiece at separate, spaced areas of the workpiece. When the milling tools have completed their paths, however, the surface formed by the tools will be contiguous.
- In yet another exemplary embodiment, the
CNC machine 100 may be operated to perform a balanced or pinch milling operation to form parts having reduced static or dynamic stiffness. Previous machine centers operated in a conventional manner may induce deflection and chatter in the workpiece, thereby decreasing precision of the machining operation. TheCNC machine 100 described herein, however, may be controlled in a manner that reduces deflection and chatter in the workpiece. - As shown in
FIG. 10 , opposite axial ends of aworkpiece 200 are supported by thechucks machining area 202. In this embodiment, the intended final configuration of theworkpiece 200 is a propeller blade that is relatively long along the Z-axis and has a relatively thin cross-section. Such a final configuration may be susceptible to vibration and chatter during machining. - The
spindle connection 145 carries afirst tool 204, which may be a first milling tool. Thefirst tool 204 is positioned on a first side of themachining area 202, shown in FIG. 10 as being located above theworkpiece 200. Thespindle 144 is movable relative to thechucks first tool 204 when it is provided as a milling tool. When thefirst tool 204 is brought into contact with theworkpiece 200, material is removed from the workpiece. As best shown inFIGS. 10 and 11 , thefirst cutting tool 204 contacts afirst point 208 on the workpiece. Engagement of thefirst cutting tool 204 with theworkpiece 200 generates a first resulting force (such as a bending force, a torsion force, a tension force, a compression force, or combinations thereof) in theworkpiece 200. - The
turret connector 134 carries asecond tool 206, which may be a second milling tool. Thesecond tool 206 is positioned on a second, opposite side of themachining area 202, shown inFIG. 10 as being located below theworkpiece 200. Theturret 108 is movable relative to thechucks second tool 206 when it is provided as a milling tool. When thesecond tool 206 is brought into contact with theworkpiece 200, material is removed from the workpiece. As best shown inFIGS. 10 and 11 , thesecond tool 206 contacts asecond point 210 on theworkpiece 200. Engagement of thesecond tool 206 with theworkpiece 200 also generates a second resulting force (such as a bending force, a torsion force, a tension force, a compression force, or combinations thereof) in theworkpiece 200. - The computer numerically controlled
machine 100 may be controlled to select thesecond point 210 relative to thefirst point 208 to minimize chatter or other deflection in theworkpiece 200, thereby to improve accuracy and precision of themachine 100. As best shown inFIG. 10 , thesecond point 210 may be selected so that it is on an opposite face of theworkpiece 200 and closely aligned with thefirst point 208 along a vertical or X-axis. When selected in this manner, the second resulting force in theworkpiece 200 generated by thesecond cutting tool 206 will substantially counteract and balance the first resulting force in the workpiece generated by thefirst cutting tool 204, thereby reducing deflection of theworkpiece 200 during machining - Accordingly, the computer control system of the
CNC machine 100 may include a computer readable medium having computer executable code disposed thereon. The computer control system may be operatively coupled to thechucks first tool 204 and thesecond tool 206 and include code for causing the first tool retainer to move relative to the workpiece retainer to selectively engage the first milling tool with a first point on the workpiece, wherein engagement of the first tool with the first point on the workpiece generates a first resulting force in the workpiece. The code may further include code for simultaneously causing the second tool retainer to move relative to the workpiece retainer to selectively engage the second milling tool with a second point on the workpiece, wherein engagement of the second tool with the second point on the workpiece generating a second resulting force in the workpiece. The code may select the second point on the workpiece relative to the first point on the workpiece so that the second resulting force substantially balances the first resulting force - Depending on the type of milling operation desired, the milling tools may be precisely aligned or merely closely aligned with a predetermined offset. When both milling tools are of the same type, such as rough milling tools, they may be precisely aligned to minimize the amount of deflection in the workpiece. The use of two tools of the same type may reduce the amount of time needed to perform the machining operation, such as a rough milling step. Alternatively, the tools may be deliberately offset to permit different types of tools to simultaneously operate. As shown in
FIG. 10 , thesecond point 210 is offset from thefirst point 208 by a distance “D” along the Z-axis. As a result, thesecond cutting tool 206 may be a rough milling tool while thefirst cutting tool 204 is a finish milling tool. In this embodiment, the first andsecond cutting tools workpiece 200 and move to the right (as shown inFIG. 10 ) as they traverse theworkpiece 200. Despite the offset between the first andsecond points workpiece 200. - Each
cutting tool workpiece 200 including multiple points of contact. Apath 220 extending along one face of theworkpiece 200 may include a set ofpoints 222, as illustrated inFIG. 11 . An opposite face of theworkpiece 200 may include a second path including a second set of points (not shown). The first and second sets of points may include, respectively, the first andsecond point second cutting tools chucks cutting tool - Additionally or alternatively, the
chucks workpiece 200 as it is machined. Thechuck 110 may be a primary support for theworkpiece 200 while thechuck 112 is a secondary support for theworkpiece 200. As shown inFIG. 10 , thechucks chuck 112 may be axially movable along the Z-axis relative to thechuck 110. When theworkpiece 200 is supported by thechucks chuck 112 may be moved toward thechuck 110 to create a compression pre-load. Alternatively, thechuck 112 may be moved away from thechuck 110 to create a tension pre-load. Still further, thechuck 112 may be rotatable about a C-axis relative to thechuck 110 to create a torsion pre-load in theworkpiece 200. - As supplied, the apparatus may or may not be provided with a tool or workpiece. An apparatus that is configured to receive a tool and workpiece is deemed to fall within the purview of the claims recited herein. Additionally, an apparatus that has been provided with both a tool and workpiece is deemed to fall within the purview of the appended claims. Except as may be otherwise claimed, the claims are not deemed to be limited to any tool depicted herein.
- All references, including publications, patent applications, and patents, cited herein are hereby incorporated by reference. The description of certain embodiments as “preferred” embodiments, and other recitation of embodiments, features, or ranges as being preferred, is not deemed to be limiting, and the claims are deemed to encompass embodiments that may presently be considered to be less preferred. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended to illuminate the disclosed subject matter and does not pose a limitation on the scope of the claims. Any statement herein as to the nature or benefits of the exemplary embodiments is not intended to be limiting, and the appended claims should not be deemed to be limited by such statements. More generally, no language in the specification should be construed as indicating any non-claimed element as being essential to the practice of the claimed subject matter. The scope of the claims includes all modifications and equivalents of the subject matter recited therein as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the claims unless otherwise indicated herein or otherwise clearly contradicted by context. The description herein of any reference or patent, even if identified as “prior,” is not intended to constitute a concession that such reference or patent is available as prior art against the present disclosure.
Claims (48)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/769,941 US8776357B2 (en) | 2009-05-04 | 2010-04-29 | System and method of synchronized machining |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21520309P | 2009-05-04 | 2009-05-04 | |
US12/769,941 US8776357B2 (en) | 2009-05-04 | 2010-04-29 | System and method of synchronized machining |
Publications (2)
Publication Number | Publication Date |
---|---|
US20100278606A1 true US20100278606A1 (en) | 2010-11-04 |
US8776357B2 US8776357B2 (en) | 2014-07-15 |
Family
ID=43030456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/769,941 Active 2033-02-02 US8776357B2 (en) | 2009-05-04 | 2010-04-29 | System and method of synchronized machining |
Country Status (4)
Country | Link |
---|---|
US (1) | US8776357B2 (en) |
JP (1) | JP5562411B2 (en) |
DE (1) | DE112010002745T5 (en) |
WO (1) | WO2010129383A2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160096230A1 (en) * | 2013-05-06 | 2016-04-07 | Dmg Mori Seiki Advanced Solutions, Inc. | Generative Gear Machining Method and Apparatus |
EP3025803A1 (en) * | 2014-11-26 | 2016-06-01 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Drive device for a machine tool and machine tool with such a drive device |
US20160243661A1 (en) * | 2015-02-20 | 2016-08-25 | Fanuc Corporation | Machine tool |
US9539698B2 (en) | 2012-04-16 | 2017-01-10 | Mori Seiki Co., Ltd. | Grind hardening method |
WO2017097416A1 (en) * | 2015-12-07 | 2017-06-15 | Gleason-Pfauter Maschinenfabrik Gmbh | Method for creating or machining gears and gear-cutting machine designed therefor |
CN108672778A (en) * | 2018-05-23 | 2018-10-19 | 夏文斌 | A kind of the cutting and milling machine structure and its control method of the automatic processing device of wire stripping blade |
US20180354089A1 (en) * | 2017-06-07 | 2018-12-13 | Deckel Maho Pfronten Gmbh | Machine tool for machining a workpiece |
US20190283141A1 (en) * | 2014-06-27 | 2019-09-19 | Jtekt Corporation | Cutting device and cutting method |
US11654491B2 (en) * | 2019-01-25 | 2023-05-23 | Fanuc Corporation | Precision machine tool |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9533371B2 (en) * | 2012-01-17 | 2017-01-03 | United Technologies Corporation | Apparatus and method for on line surface enhancement of a workpiece |
US10343246B1 (en) | 2015-08-21 | 2019-07-09 | Gerald L Rowe | Automated machining apparatus having a workpiece holder with a rotatable turret that holds multiple workpieces |
WO2023053696A1 (en) | 2021-09-30 | 2023-04-06 | 中村留精密工業株式会社 | Vibration-control machining method for long workpiece |
Citations (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887639A (en) * | 1957-01-29 | 1959-05-19 | Gen Electric | Tracer synchronizing scheme for center drive lathes |
US4475421A (en) * | 1982-09-13 | 1984-10-09 | Triple R Hydraulics, Inc. | Lathe |
JPS63102818A (en) * | 1986-10-20 | 1988-05-07 | Honda Motor Co Ltd | Method of machining crankshaft pin |
JPS63102817A (en) * | 1986-10-20 | 1988-05-07 | Honda Motor Co Ltd | Method of machining crankshaft pin |
US4768904A (en) * | 1985-09-12 | 1988-09-06 | Gebr. Heller Maschinenfabrik Gesellschaft Mit Beschraenkter Haftung | Apparatus for broaching cylindrical surfaces of a workpiece, in particular of a crankshaft |
US4879660A (en) * | 1987-03-31 | 1989-11-07 | Brother Kogyo Kabushiki Kaisha | Thread cutting machine with synchronized feed and rotation motors |
US5083066A (en) * | 1988-08-02 | 1992-01-21 | Fanuc Ltd. | Method of controlling synchronous operation of machine tool |
JPH04135102A (en) * | 1990-09-26 | 1992-05-08 | Honda Motor Co Ltd | Method for machining long workpiece |
US5117544A (en) * | 1988-04-19 | 1992-06-02 | Nakamura-Tome Precision Ind. Co., Ltd. | Two-spindle opposed type cnc lathe |
US5173648A (en) * | 1988-05-31 | 1992-12-22 | Fanuc Ltd. | Numerical control method |
US5175680A (en) * | 1989-03-02 | 1992-12-29 | Toyoda Koki Kabushiki Kaisha | Synchronizing control apparatus |
US5555178A (en) * | 1992-11-17 | 1996-09-10 | Mitsubishi Denki Kabushiki Kaisha | Control apparatus and method for holding a workpiece in a machine tool |
US5775853A (en) * | 1996-09-03 | 1998-07-07 | Makino Inc. | Machining method and multi-function tool |
US5832797A (en) * | 1996-08-30 | 1998-11-10 | Programmable Tracing Incorporated | Rotary machine tool |
US6053676A (en) * | 1996-08-06 | 2000-04-25 | Garschagen; Friedrich Albert | Machine tool for the processing of rotating tools by means of a tool driven in synchronization with a work piece |
US6196773B1 (en) * | 1998-09-08 | 2001-03-06 | Makino Inc. | Tool with control of a fluid axis using reference information from other tool axes |
US6202520B1 (en) * | 1998-06-11 | 2001-03-20 | Car-Tec Company | Method and apparatus for machining highly concentric parts |
US6270295B1 (en) * | 1998-09-08 | 2001-08-07 | Makino, Inc. | Tool with selectively biased member and method of using the same |
US20010022920A1 (en) * | 1998-09-08 | 2001-09-20 | Hyatt Gregory Aaron | Selectively biased tool and methods of using the same |
US20010034196A1 (en) * | 2000-04-05 | 2001-10-25 | Hyatt Gregory Aaron | Distal end honing device |
US20020069547A1 (en) * | 2000-09-05 | 2002-06-13 | Hyatt Gregory Aaron | Method and instrument for gauging a workpiece |
US20020173247A1 (en) * | 2000-10-20 | 2002-11-21 | Hyatt Gregory A. | Machining device and methods |
US20030086769A1 (en) * | 2001-09-17 | 2003-05-08 | Hyatt Gregory A. | Apparatus and methods for producing a curved tooth |
US6772659B2 (en) * | 2001-09-04 | 2004-08-10 | Komet Praezisionswerkzeuge Robert Breuning Gmbh | Tool head for use in machine tools |
US20040218987A1 (en) * | 2002-09-04 | 2004-11-04 | Sheffler Glenn W | Cutting tool for rough and finish milling |
US20050047885A1 (en) * | 2003-09-02 | 2005-03-03 | Hyatt Gregory A. | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
US20050186044A1 (en) * | 2004-02-25 | 2005-08-25 | Hegde Parag L. | Process for machining |
US20060111019A1 (en) * | 2002-09-03 | 2006-05-25 | Hyatt Gregory A | Toolholder |
US20060218764A1 (en) * | 2005-03-24 | 2006-10-05 | Hiroshi Hashimoto | Machine tool |
US20080025808A1 (en) * | 2006-07-25 | 2008-01-31 | Mori Seiki Usa, Inc. | Compound Machining Method and Apparatus |
US20080060491A1 (en) * | 2006-09-11 | 2008-03-13 | Mori Seiki Usa, Inc. | Turning Method and Apparatus |
US20080181736A1 (en) * | 2004-02-26 | 2008-07-31 | Kennametal Inc. | Cutting Tool for Rough and Finish Milling |
US20080213055A1 (en) * | 2005-07-28 | 2008-09-04 | Klingelnberg Gmbh | Universal Machine for the Soft Machining of Bevel Gears and Corresponding Method |
US20080219781A1 (en) * | 2007-03-01 | 2008-09-11 | Mori Seiki Usa, Inc. | Machine Tool With Cooling Nozzle and Method for Applying Cooling Fluid |
US20080220697A1 (en) * | 2007-03-01 | 2008-09-11 | Mori Seiki Usa, Inc. | Machine Including Grinding Wheel and Wheel Dresser |
US20080228313A1 (en) * | 2007-03-05 | 2008-09-18 | Mori Seiki Usa, Inc. | Device and Method for Turning In Virtual Planes |
US20080232911A1 (en) * | 2007-03-23 | 2008-09-25 | Hyatt Gregory A | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
US20080232909A1 (en) * | 2003-09-02 | 2008-09-25 | Kennametal Inc. | Assembly For Rotating A Cutting Insert During A Turning Operation And Inserts Used Therein |
US20090095126A1 (en) * | 2007-10-10 | 2009-04-16 | Mori Seiki Usa, Inc. | Tool Indexer and Turret-Indexer Assembly |
US20090112355A1 (en) * | 2007-03-02 | 2009-04-30 | Mori Seiki Usa, Inc. | Device and Method for Dressing Cutting Tools |
US20090211338A1 (en) * | 2008-02-21 | 2009-08-27 | Mori Seiki Usa, Inc. | Measuring Apparatus and Associated Method |
US20090279964A1 (en) * | 2008-05-12 | 2009-11-12 | Gregory Aaron Hyatt | Holder main body |
US7682112B2 (en) * | 2003-10-24 | 2010-03-23 | Dufieux Industrie | Process and a device for the machining of panels |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0688161B2 (en) * | 1987-10-30 | 1994-11-09 | オ−クマ株式会社 | Multi-tasking lathe with back processing equipment |
JPH0635082B2 (en) * | 1988-11-15 | 1994-05-11 | オ−クマ株式会社 | Cutting control method for numerically controlled lathe |
JPH07204934A (en) * | 1994-01-21 | 1995-08-08 | Aisin Ee I Kk | Machining method for synchronized spline |
JP2000305612A (en) * | 1999-04-26 | 2000-11-02 | Toyoda Mach Works Ltd | Numerical controller capable of controlling plural main shafts |
EP1155764B1 (en) | 1999-10-28 | 2007-12-12 | Nakamura-Tome Precision Ind. Co., Ltd. | Combined nc lathe |
JP2005125482A (en) * | 2003-10-03 | 2005-05-19 | Tsugami Corp | Lathe |
-
2010
- 2010-04-29 US US12/769,941 patent/US8776357B2/en active Active
- 2010-04-29 JP JP2012508714A patent/JP5562411B2/en active Active
- 2010-04-29 DE DE112010002745T patent/DE112010002745T5/en active Pending
- 2010-04-29 WO PCT/US2010/032915 patent/WO2010129383A2/en active Application Filing
Patent Citations (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887639A (en) * | 1957-01-29 | 1959-05-19 | Gen Electric | Tracer synchronizing scheme for center drive lathes |
US4475421A (en) * | 1982-09-13 | 1984-10-09 | Triple R Hydraulics, Inc. | Lathe |
US4768904A (en) * | 1985-09-12 | 1988-09-06 | Gebr. Heller Maschinenfabrik Gesellschaft Mit Beschraenkter Haftung | Apparatus for broaching cylindrical surfaces of a workpiece, in particular of a crankshaft |
JPS63102818A (en) * | 1986-10-20 | 1988-05-07 | Honda Motor Co Ltd | Method of machining crankshaft pin |
JPS63102817A (en) * | 1986-10-20 | 1988-05-07 | Honda Motor Co Ltd | Method of machining crankshaft pin |
US4879660A (en) * | 1987-03-31 | 1989-11-07 | Brother Kogyo Kabushiki Kaisha | Thread cutting machine with synchronized feed and rotation motors |
US5117544A (en) * | 1988-04-19 | 1992-06-02 | Nakamura-Tome Precision Ind. Co., Ltd. | Two-spindle opposed type cnc lathe |
US5173648A (en) * | 1988-05-31 | 1992-12-22 | Fanuc Ltd. | Numerical control method |
US5083066A (en) * | 1988-08-02 | 1992-01-21 | Fanuc Ltd. | Method of controlling synchronous operation of machine tool |
US5175680A (en) * | 1989-03-02 | 1992-12-29 | Toyoda Koki Kabushiki Kaisha | Synchronizing control apparatus |
JPH04135102A (en) * | 1990-09-26 | 1992-05-08 | Honda Motor Co Ltd | Method for machining long workpiece |
US5555178A (en) * | 1992-11-17 | 1996-09-10 | Mitsubishi Denki Kabushiki Kaisha | Control apparatus and method for holding a workpiece in a machine tool |
US6053676A (en) * | 1996-08-06 | 2000-04-25 | Garschagen; Friedrich Albert | Machine tool for the processing of rotating tools by means of a tool driven in synchronization with a work piece |
US5832797A (en) * | 1996-08-30 | 1998-11-10 | Programmable Tracing Incorporated | Rotary machine tool |
US5775853A (en) * | 1996-09-03 | 1998-07-07 | Makino Inc. | Machining method and multi-function tool |
US6202520B1 (en) * | 1998-06-11 | 2001-03-20 | Car-Tec Company | Method and apparatus for machining highly concentric parts |
US6196773B1 (en) * | 1998-09-08 | 2001-03-06 | Makino Inc. | Tool with control of a fluid axis using reference information from other tool axes |
US6270295B1 (en) * | 1998-09-08 | 2001-08-07 | Makino, Inc. | Tool with selectively biased member and method of using the same |
US20010022920A1 (en) * | 1998-09-08 | 2001-09-20 | Hyatt Gregory Aaron | Selectively biased tool and methods of using the same |
US20030129032A1 (en) * | 1998-09-08 | 2003-07-10 | Hyatt Gregory Aaron | Selectively biased tool and methods of using the same |
US20010034196A1 (en) * | 2000-04-05 | 2001-10-25 | Hyatt Gregory Aaron | Distal end honing device |
US20020069547A1 (en) * | 2000-09-05 | 2002-06-13 | Hyatt Gregory Aaron | Method and instrument for gauging a workpiece |
US20020173247A1 (en) * | 2000-10-20 | 2002-11-21 | Hyatt Gregory A. | Machining device and methods |
US6772659B2 (en) * | 2001-09-04 | 2004-08-10 | Komet Praezisionswerkzeuge Robert Breuning Gmbh | Tool head for use in machine tools |
US20030086769A1 (en) * | 2001-09-17 | 2003-05-08 | Hyatt Gregory A. | Apparatus and methods for producing a curved tooth |
US20060111019A1 (en) * | 2002-09-03 | 2006-05-25 | Hyatt Gregory A | Toolholder |
US20040218987A1 (en) * | 2002-09-04 | 2004-11-04 | Sheffler Glenn W | Cutting tool for rough and finish milling |
US20080232909A1 (en) * | 2003-09-02 | 2008-09-25 | Kennametal Inc. | Assembly For Rotating A Cutting Insert During A Turning Operation And Inserts Used Therein |
US20050047885A1 (en) * | 2003-09-02 | 2005-03-03 | Hyatt Gregory A. | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
US20070101837A1 (en) * | 2003-09-02 | 2007-05-10 | Kennametal Inc. | Method And Assembly For Rotating A Cutting Insert During A Turning Operation And Inserts Used Therein |
US7682112B2 (en) * | 2003-10-24 | 2010-03-23 | Dufieux Industrie | Process and a device for the machining of panels |
US20050186044A1 (en) * | 2004-02-25 | 2005-08-25 | Hegde Parag L. | Process for machining |
US20080181736A1 (en) * | 2004-02-26 | 2008-07-31 | Kennametal Inc. | Cutting Tool for Rough and Finish Milling |
US20060218764A1 (en) * | 2005-03-24 | 2006-10-05 | Hiroshi Hashimoto | Machine tool |
US20080213055A1 (en) * | 2005-07-28 | 2008-09-04 | Klingelnberg Gmbh | Universal Machine for the Soft Machining of Bevel Gears and Corresponding Method |
US20080025808A1 (en) * | 2006-07-25 | 2008-01-31 | Mori Seiki Usa, Inc. | Compound Machining Method and Apparatus |
US20080060491A1 (en) * | 2006-09-11 | 2008-03-13 | Mori Seiki Usa, Inc. | Turning Method and Apparatus |
US20080219781A1 (en) * | 2007-03-01 | 2008-09-11 | Mori Seiki Usa, Inc. | Machine Tool With Cooling Nozzle and Method for Applying Cooling Fluid |
US20080220697A1 (en) * | 2007-03-01 | 2008-09-11 | Mori Seiki Usa, Inc. | Machine Including Grinding Wheel and Wheel Dresser |
US20100130106A1 (en) * | 2007-03-01 | 2010-05-27 | Mori Seiki Usa, Inc. | Machine tool with cooling nozzle and method for applying cooling fluid |
US20090112355A1 (en) * | 2007-03-02 | 2009-04-30 | Mori Seiki Usa, Inc. | Device and Method for Dressing Cutting Tools |
US20080228313A1 (en) * | 2007-03-05 | 2008-09-18 | Mori Seiki Usa, Inc. | Device and Method for Turning In Virtual Planes |
US20080232911A1 (en) * | 2007-03-23 | 2008-09-25 | Hyatt Gregory A | Method and assembly for rotating a cutting insert during a turning operation and inserts used therein |
US20090095126A1 (en) * | 2007-10-10 | 2009-04-16 | Mori Seiki Usa, Inc. | Tool Indexer and Turret-Indexer Assembly |
US20090211338A1 (en) * | 2008-02-21 | 2009-08-27 | Mori Seiki Usa, Inc. | Measuring Apparatus and Associated Method |
US20090279964A1 (en) * | 2008-05-12 | 2009-11-12 | Gregory Aaron Hyatt | Holder main body |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9539698B2 (en) | 2012-04-16 | 2017-01-10 | Mori Seiki Co., Ltd. | Grind hardening method |
US20160096230A1 (en) * | 2013-05-06 | 2016-04-07 | Dmg Mori Seiki Advanced Solutions, Inc. | Generative Gear Machining Method and Apparatus |
US20190283141A1 (en) * | 2014-06-27 | 2019-09-19 | Jtekt Corporation | Cutting device and cutting method |
US10919094B2 (en) * | 2014-06-27 | 2021-02-16 | Jtekt Corporation | Cutting device and cutting method |
EP3025803A1 (en) * | 2014-11-26 | 2016-06-01 | TRUMPF Werkzeugmaschinen GmbH + Co. KG | Drive device for a machine tool and machine tool with such a drive device |
US9539633B2 (en) | 2014-11-26 | 2017-01-10 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Machine tool drive system |
US20160243661A1 (en) * | 2015-02-20 | 2016-08-25 | Fanuc Corporation | Machine tool |
WO2017097416A1 (en) * | 2015-12-07 | 2017-06-15 | Gleason-Pfauter Maschinenfabrik Gmbh | Method for creating or machining gears and gear-cutting machine designed therefor |
CN108367371A (en) * | 2015-12-07 | 2018-08-03 | 格里森-普法特机械制造有限公司 | Method for generating or processing gear and the gear cutting machine designed thus |
US20180354089A1 (en) * | 2017-06-07 | 2018-12-13 | Deckel Maho Pfronten Gmbh | Machine tool for machining a workpiece |
CN108672778A (en) * | 2018-05-23 | 2018-10-19 | 夏文斌 | A kind of the cutting and milling machine structure and its control method of the automatic processing device of wire stripping blade |
US11654491B2 (en) * | 2019-01-25 | 2023-05-23 | Fanuc Corporation | Precision machine tool |
Also Published As
Publication number | Publication date |
---|---|
US8776357B2 (en) | 2014-07-15 |
WO2010129383A3 (en) | 2011-03-10 |
JP5562411B2 (en) | 2014-07-30 |
DE112010002745T5 (en) | 2013-06-27 |
JP2012525983A (en) | 2012-10-25 |
WO2010129383A2 (en) | 2010-11-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8776357B2 (en) | System and method of synchronized machining | |
US7997172B2 (en) | Turning method and apparatus | |
US10663947B2 (en) | Compound machining method and apparatus | |
JP5094465B2 (en) | Machine tool and method of machining inner surface of workpiece using the machine tool | |
US6928909B1 (en) | Automatic lathe | |
US6935003B2 (en) | Compound fabrication process and apparatus | |
JP2017512896A (en) | Machine tool system and method for additional machining | |
CN206296665U (en) | A kind of Compositions of metal-working machines of rotary digital control milling machine and grinding machine | |
EP3162478B1 (en) | Machine tool and machining method | |
JPWO2002092266A1 (en) | Numerically controlled lathe and machining method of workpiece by this numerically controlled lathe | |
KR20160090636A (en) | machining center with double spindle head | |
WO2019082507A1 (en) | Lathe | |
US9539698B2 (en) | Grind hardening method | |
CN107872994B (en) | Machine tool | |
US9575485B2 (en) | Compound machining method and apparatus | |
US20110118867A1 (en) | Device and Method for Turning in Virtual Planes | |
US20090112355A1 (en) | Device and Method for Dressing Cutting Tools | |
US20190202017A1 (en) | Selecting device, selecting method, and program | |
JPH07164203A (en) | Multi-spindle automatic lathe | |
JP2009066725A (en) | Combined lathe and its work machining method | |
US20160096230A1 (en) | Generative Gear Machining Method and Apparatus | |
JPH05154701A (en) | Two-main spindle nc lathe | |
JP2003062701A (en) | Cnc lathe with counter spindle | |
KR100324642B1 (en) | Dual Rotary Table Control Unit and Method | |
JP2023125537A (en) | Workpiece processing method and processing machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: MORI SEIKI CO., LTD, JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HYATT, GREGORY A.;LANKFORD, JAMES;WALLACE, JEFFREY D.;SIGNING DATES FROM 20100611 TO 20100614;REEL/FRAME:024622/0316 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551) Year of fee payment: 4 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 8 |